Several same objects in a tilelist not selectable

Question

Hello.
I have 2 horizontal lists in my application. The first one
contains images and I am allowed to drag them from first one and
drop in the another one. Everything seems to work perfectly in
first look. I can drag images to one list to another and it copies
the images a move to other one. The problem appears when I move
same image for a several times (2 or more). There seems to be
several items, but the problem is that I can only select the last
one. I have also a numeric stepper there. When I change a value in
other, value changes in another as well.
I think problem is that the objects have same UID, but I
can't figure out how to change that.
Can you please tell me the solution to this problem. I have
totally lost my nerves with this.
Thank you!
Here is the source:
<mx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
[Bindable]
private var valitut_kuvat:ArrayCollection=new
ArrayCollection();
<mx:Canvas label="Choose images">
<mx:TileList
dataProvider="{taustakuvalataus.lastResult.multime dia.images.img}"
dropEnabled="false" allowDragSelection="false" dragEnabled="true"
dragMoveEnabled="false" itemRenderer="Thumbnail"
id="tilelist_kuvat"
creationComplete="taustakuvalataus.send()"></mx:TileList>
<mx:HorizontalList dropEnabled="true" dragEnabled="true"
dragMoveEnabled="true" itemRenderer="Thumbnail2"
dropShadowEnabled="true" id="multimedia_valitut"
dataProvider="{valitut_kuvat}"></mx:HorizontalList>
</mx:Canvas>
-----------Thumbnail.mxml----------------------------------------------
<?xml version="1.0"?>
<mx:VBox xmlns:mx="
http://www.adobe.com/2006/mxml"
xmlns="*" width="80" height="65" horizontalScrollPolicy="off"
verticalScrollPolicy="off" borderStyle="none">
<mx:Image id="img" height="60" width="80"
source="{data.kuva}"/>
</mx:VBox>
-----------Thumbnail2.mxml---------------------------------------------
<?xml version="1.0"?>
<mx:VBox xmlns:mx="
http://www.adobe.com/2006/mxml"
xmlns="*" width="125" horizontalScrollPolicy="off"
verticalScrollPolicy="off" borderStyle="none" height="158">
<mx:Image id="img" height="100" width="120"
source="{data.kuva}"/>
</mx:VBox>

Answer 1

i have had the same exact problem, it only happens if you
move one image and have 2 instances of it on the other side. i have
been trying from this mornin to figure out a solution. i am getting
close, ill let u know